2016-01-30 01:50:37 +03:00
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/*
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* Raspberry Pi emulation (c) 2012 Gregory Estrade
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2020-03-23 20:22:30 +03:00
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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2016-01-30 01:50:37 +03:00
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*/
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#ifndef BCM2835_MBOX_DEFS_H
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#define BCM2835_MBOX_DEFS_H
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/* Constants shared with the ARM identifying separate mailbox channels */
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#define MBOX_CHAN_POWER 0 /* for use by the power management interface */
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#define MBOX_CHAN_FB 1 /* for use by the frame buffer */
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#define MBOX_CHAN_VCHIQ 3 /* for use by the VCHIQ interface */
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#define MBOX_CHAN_PROPERTY 8 /* for use by the property channel */
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#define MBOX_CHAN_COUNT 9
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#define MBOX_SIZE 32
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#define MBOX_INVALID_DATA 0x0f
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/* Layout of the private address space used for communication between
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* the mbox device emulation, and child devices: each channel occupies
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* 16 bytes of address space, but only two registers are presently defined.
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*/
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#define MBOX_AS_CHAN_SHIFT 4
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#define MBOX_AS_DATA 0 /* request / response data (RW at offset 0) */
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#define MBOX_AS_PENDING 4 /* pending response status (RO at offset 4) */
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#endif /* BCM2835_MBOX_DEFS_H */
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